Regrooving tool



urg. 25, 1931-. F. H. FuNcHEss nEGRoovING lTooL Filed March 12, 1930 vili m...

Pteted Aug. `25,1931? y .hiinirentori:reletete ai? 15091 "for deepening er eleeninethe ierfe'evee, 0f z pietonmndehes foraitjszprmeryebieet te Provide; :in a menne?.eehereneftereet feth a tool lof .,Sueh dass. which .mey'f be 'epplied rodtherefrom. Afurthere Object 0f@ heIlVeIlUQIrl :1S 110 provide a toolA ofA 'the` charactery aforesaid :1o by means of-whehsthe-fernelendebelewlde pieten-'groeve to" whehtheteel)s beine' Y applied 'may be relieved@ .Chemfeed ,SIXUle l teneedely with the deepeningief ,the groeve,

A Lurtheryebjeetdf .thefinveutien de te lwhlehfgempleys liMerche111geelele ife'uttere ef varying sizes in` orden that :the tool'fmaybe applied te 'greeted 1015,; differenty 'SlZeS`v the' 4he butto any depth '1 1,;Withiffthe'foregellge and; .other dei Vthe Scope VVof the` claims herenrito` appended.`

` In;` theeeeempejnrng drawings fn, which llike1,1,inneereleefe;employed@deeeeete,like a5 parte' threueheutatheeevefel View@ fFigure, 1 iena, te?? plee el .toolV in operative: position resppeet'to` a g Y pistonshown in'secti'on.

Y 'Figure 2 'ig"eiseetipafmij bi; die lite i Figure 3f "is a Seoti Y f Figure@ geboden ,fyiltfi britte: groeve 45 f Figure is atperspeotivefiliewy lof' the land e man@@nel@ :5o ynur'nerelI designatethe1-annnlarv'body 'porf greater length than the boss'y 3*,and the outer n Meret* keresmffeeeFleer-01t-edNFeletCALIF 1e1i1e-i e FIRM' n 7 f ,*QmenooirINd:noord` d i 'I fiipipneation monarch-12, 1930.1Sr1a1 No.435535 tion afstoek,'sohjbodyfportionbeing i adaptedrjtowencirele fa; piston: lsliehl as 2; Formed integrallywith the body portion l1 yisa laterally projecting, enlarged; cylindri-` ea11bo ss"3,.the louter portion of whichisllolf)HL with an externally threaded 'end portion@ of a liamflleHennie-nrl 5- .Deuuetrieelly0P-y pqsiefhefboss, e, the body( portion f1 is, f

Vi60n formed with aj boss: 6y whichy is of Amaterialljy Portion Of which; is" 110110W Send; Provided thepyboss (i j sjormed with acutaway portion `7 1 which extends from a. pointr` snbstantiallyp midway the ends 0f the bees @te die. inner 'e end,thereoiltheupperedge of thecut away f e .n portion 7heilig` flush withthe. upperffaice of the bedy portion .1 "The ,cute away pertionll is formedwith arecessS `which opens-through af yhandle memberi10-fgf'lhe threadsuof; the

inner Vkend of the Screw.

:j .'Sldablysmounted within` recessl a outter 13 which is formed in its lower face y j W1thanareuate, transverse1y 'extending re-y finnyimproved cess 14 .r vThe receseltis arranged in spaced ywith,internal?threads. 7"Ihexupper aefof `rsorewgl y terminate ;in; spa`ced relation to the innerfendlof the screw,fand they smooth inner .v i endrp'ortio'nf ofthe screw isf formed with-a foirournferentiallyl extending groove: 11 "whereby afbead 12 is -formedattheextreme relation to the outer end of vdlecutter there-k v l by proyiding'a rib 15 at the extremeouter endof the cutter, 1 Thebead 12 on the screw 911s adaptedr to extend into the reeessld,

while the rib y,15, on the ,cutterl is ALadapted j i to extend vinto vthelgroove 11 in thefeed screw. 'At the forwardend thereof, the eut-l ter `13y i5 formed yin y, its lower face; with 5 ak recess 16 thereby proyiding the cutterl with v,arl'uiuier` end po'rtonvlof materallygre dueed Lthickness and in spaoedrelation to A' f 'the b'ttom ,Waller the recesso. Ehem.- 7

,duced end-.portion 1 7 is formed ywith an` elongated .Slet [18 wbieh opens thljoilgh: the

55. low and'interiorly threaded .for lengagement Y` 'zo`A .f thewellefthe hellewipertenefthe boseiand which, extends inwerdlythrough the, upper 'v fece Ori thebedy Portion l.l Engaging thein# f- Y ytermal:threadsvof thel bos is a feed sorews), 1 7 'the ontenendportion oftwhioh is formedwith mediatethe endsrthereof the cutter 13 is fV formed Vwith acircular opening 19,

Seated on the cutter 13 is an auxiliary cutter 2O .which is formed` centrally thereof with an: elongated opening 21 in registry with vrthe opening 19. Extending Ythrough the openings 19 and 21 is a'bolt 22, thehead of whichis Vconnikze'rsunk in the lower face` O ftlieicutter y13.. -The Cutter v`20fis, maintain-- the forward end lthereof the auxiliary cutf ter 2O is formed with a; notch r25 -which eX-,J tends fromV one side edge ofthe cutter to a point; substantially midway betweenV the side edgescthereofi- At the rearward' end there-V ofthe cutter isf formedwith ,a notch '26 lwhich;extendsA fromone` side edge of the cutter toa point substantially midway between the side edges thereof. The'notchesl Y' and"26are extended from opposite side,

edges of the' cutter. The portion'offthe cut.

ter 20j`which extends rearwardly beyondthe notch 26li's formedwith a bevelled end face indicated at l271 Y Threaded on the feedscrew 9, bet'vvefanfthenk handled() and boss 6,is an adjusting-lnutf28 :which is provided with acircumferentially extending row ofcalibrations vl29. ht Ythe rearward end thereof, theboss is formed in its upper face withazcu't away portion 30 which'i-nclines outwardly and downward- Y' ly? andi` terminates 'atFits outer end with the central jportionV thereoff'flushfl ,withv the calibrated Vportionlofthe adjusting nut 28.

. d' Threaded onfthe vfeed screw 9 ybetween the l handlelO andfadjusting 'nut A28'is; a lookl nut-a1.v "1 'Y c "A: Formed on vthe llody POrtion V1;- areiifri' Pah" of :outward and fradial 'proj e'ction's 32 --which are 'spaced' an'Y equal :distance- 'fromj the boss Gand -fro'n'iy each other.`- T -he proj ections 32 are formed in their upper faces'with recesses 33 which extend throughout Vthe length of the projections and through`A the upper -'face of the body portionl Disposed lwlthineach recess 33I4 is a guide-V 34,7whi'cyhf1is maintained inipositlo'nby means lof yapairyof flanged L nutsf35,y the stems ofjwhichf arel'threaded throughthe body portion 1. YA similar pair off'nuts-B secures-'the cut-ter 13'in position `gujides'34 are reversible wit-hinthe.re'cessesY 33inlorderf that the end p'ortioiiofA the guide "of the-"desired thickness-may be positioned ji-'nwa'rfdlyfforl engagement ,withv the VVpiston grooveflto l,which thez toolV is being applied; rlntlie operation of myfreg'roovingtool,

the bodyporti'o'nll is'iplac'ed; around' a piston v with the guides 34 and cutter 13 engaging the skirt thereof, and the nuts 35 are tightl Y ened to prevent longitudinal movement of Ymoved into engagement with the outer Yend of the b.o'ssf"6,`andV backedfoff fromfth'e boss the requiredVV numberr of calibrations repre- -senting--the ydesiredrdepth of the groove in thejpiston.y Thelock nut 31 is thentight n e y l enedlagainst the` adjusting nut 28 and the ed in positiony with respect to thebutt'er'13j'- by means of a washer 23 and a nut.j2,4.l v AtH body portion'l is'm'oved'longitudinally of thepiston to bringthe guides 34 within the groove which it is desired to deepen. The

Y handle .10,is then: rotated to bring the cutter 13 into engagement with the inner walljof the groove, and the auxiliary or land cutter 20 is adjusted to bring the inner end thereof into engagement with the ring landV directly above the groove. @The stock isi' then rotated' in aclock-wise directionwhileV the cutter l3^`is fediinwardlyby"rotatingthe handle member 10.1 Ifrit isdesired tochamferthe ringfland, the tool is inVerted'f-'and the Ala'nd cutter v2Or`isreversed endffor end in order to bring the bevelled edge' 27inf engagement fwithr the 'ring land.'4 With-'the land cutter 20in-this position,'thering land Willvr be chamfered bythe -cutting7edge27 simultaneously withV the ldeepening 'of the groovesbyfthefcutt'er 13. When the cutter.

13 has been moved inwardly a suicientdisi tanfceY ito' bring the adjusting nutk 28 into engagement with thef outer end Aof theboss '6, any further'inward movement of thecutter is 'prevented7 thereby VassuringV thev proper depth of the groove."

' 'It is thought that the many advantagesof regrooving ,tool inv accordance with this invention lwill be vreadily apparent," and -al-v thoughthe preferred embodimentofv theinvention islas illustratedv and described, itis to kbe understood fthat' changes". in the] size, shape and arrangementjoff parts may be -re-V sorted to,v so long as Vsuch, changes fall with-v in thescope of the invention asldefined the.V appended claims.'

Vi/ihatli-clai'misgrV 'i Y Y. i. 1j. Av'. regrooving tool ycomprising, i arotatable, annular member adapted to encircle a piston, aboss projectingl laterally: from, the annularrmeinber and havingxa hollow, internallyY threaded outer'gendportion, aA hanV dlenfor the annular member,"saidy handlebe-l ing formedwith a feed screw in engagement with the threaded portion'of"A the boss, said boss having a cut away portion. at its inner end formedr with a l"recess opening through the wall'of the'ho'llow portion ofthe boss at theinnerfendofvr Said;hollowportion, a groovecutter slidably mounted Iin said refV cess a-ndghaving its outer: end connected,withV the feed screw to movelongitudinallyther with, and ai "land,v ycutter .adjustablyf mounted onv the groove 'cutter, said` groove cutter-.and

cutter operating sin'lultaneoi'lslyiupon,y a

f Lthe'rotation of the annular member.' 'f

2.A regrooving'tool comprising, a ro-r i* y tatable, annular member adapted toencircle 'a `pisto'ma boss'projecting laterally from the annular member ,and having a hollow, y

internally 'threaded' outerfend portion, a

handlemember for the annular member, said yhandle being formed with a'feedscrewl in fengagem'ent with ,Y the' kthreaded portion' of fthe boss, said kfeed screwhaving a bead at its inner end andfurther' having a groove f disposed betweensaid bead andi the threads n ofthescrew, saidbossi having a cut awayy portion at its inner; end formed' with ya re-l cess opening throughv the'wall of the inner c Y end of the hollow" portion, and 'a groove cutter slidably mounted in saidrecess, said groove/cutter and landy cutter operating simultaneouslyy upon the .rotation of the annular member, said groove cutter having its y lower face formedwithan arcuate lrecess for engagement withfthelbead at theinner end l of the screw andfurther 'formed with a rib for engagement with` the ycent the Vbead on the screw. y i y o :3. yA regrooving tool"comprising,l ya yro-` groove' vadjatatab'le, annularmemberadapted toy encircle a piston, ya boss projecting,laterallykffrom the annular member/and Ahavinga hollow, iI'iternall-y` threaded outerv end portion, a

handle for the annular, member, said handlel f beingformedwithja Afeed yscrew inV engage- 1 mentzwith ythe threadedportion of the boss, 35 said `boss having kya, cutaway portion at its* 'throughy the ywall ofthe hollow portion of inner end formed witha recess lopening the boss at the inner endV of 'said' hollow rportiom a groove'cutter slidably mounted iny said recess and havingits outer end' connected with thefeed screw to' move longi- .tudinally therewith, vailandcutter adjust-kk y 'ablymounted' on thegroove cutter, a pair of bosses projecting romthe annular member,

saidv pair Vofloosses being spaced an equal distance from therst'namedfboss and' from each other, andanfelongated guide ywithin l ,Y "eachj bossy of said pair for! engagement with y the groove of a-piston, said `gliides beingad-vr yjustable radially othean'nularmember.

Intes'tmony whereof,"I affix my signature fr FRED' 'FUNcHEss. f n w hereto.V y 

